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Localized Routing for Proxy Mobile IPv6
RFC 6705

Internet Engineering Task Force (IETF)                       S. Krishnan
Request for Comments: 6705                                      Ericsson
Category: Standards Track                                      R. Koodli
ISSN: 2070-1721                                            Cisco Systems
                                                             P. Loureiro
                                                                     NEC
                                                                   Q. Wu
                                                                  Huawei
                                                                A. Dutta
                                                                  NIKSUN
                                                          September 2012

                Localized Routing for Proxy Mobile IPv6

Abstract

   Proxy Mobile IPv6 (PMIPv6) is a network based mobility management
   protocol that enables IP mobility for a host without requiring its
   participation in any mobility-related signaling.  PMIPv6 requires all
   communications to go through the local mobility anchor.  As this can
   be suboptimal, Localized Routing (LR) allows Mobile Nodes (MNs)
   attached to the same or different Mobile Access Gateways (MAGs) to
   route traffic by using localized forwarding or a direct tunnel
   between the gateways.  This document proposes initiation,
   utilization, and termination mechanisms for localized routing between
   mobile access gateways within a proxy mobile IPv6 domain.  It defines
   two new signaling messages, Localized Routing Initiation (LRI) and
   Local Routing Acknowledgment (LRA), that are used to realize this
   mechanism.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by
   the Internet Engineering Steering Group (IESG).  Further
   information on Internet Standards is available in Section 2 of
   RFC 5741.

   Information about the current status of this document, any
   errata, and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc6705.

Krishnan, et al.             Standards Track                    [Page 1]
RFC 6705                PMIPv6 Localized Routing          September 2012

Copyright Notice

   Copyright (c) 2012 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1. Introduction ....................................................3
   2. Conventions Used in This Document ...............................3
   3. Initiation of Localized Routing .................................3
      3.1. MAG Behavior ...............................................4
      3.2. LMA Behavior ...............................................4
   4. Teardown of Localized Routing ...................................4
   5. Scenario A11: Two MNs Attached to the Same MAG and LMA ..........4
      5.1. Handover Considerations ....................................6
   6. Scenario A21: Two MNs Attached to Different MAGs but the
      Same LMA ........................................................7
      6.1. Handover Considerations ....................................9
      6.2. Tunneling between the MAGs .................................9
   7. Scenario A12: Two MNs Attached to the Same MAG with
      Different LMAs .................................................10
      7.1. Handover Considerations ...................................12
   8. Scenario A22: Two MNs Attached to Different MAGs with
      Different LMAs .................................................13
   9. IPv4 Support in Localized Routing ..............................13
   10. Message Formats ...............................................13
      10.1. Localized Routing Initiation (LRI) .......................14
      10.2. Localized Routing Acknowledgment (LRA) ...................15
   11. New Mobility Option ...........................................16
      11.1. MAG IPv6 Address .........................................16
   12. Configuration Variables .......................................17

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